Oil well rig



Aug. 8, 1939. L. M. YORK 2,168,837

011. WELL am Filed Dec. 20, 1937 3 Sheets-Sheet l Inventor lmz nymxrkAug. 8, 1939. L, Y RK 2,168,837

OIL WELL RIG Filed Dec. 20, 1957 I 3 Sheets-Sheet 2 Eng 4| i'fi 19m;

Aiiorneys L. M. YORK OIL WELL RIG Aug. 8, 1939.

Filed Dec. 20, 1937 3 Sheets-Sheet- 3 Inventor larzfi'afi M $1 73Patented Aug. 8. 1939 UNITED STATES PATENT OFFICE 2 Claims.

My invention relates to improvements in oil well rigs of the portablederrick type for use particularly in pulling and stacking well tubingalthough, as will presently appear, it is adapted for other uses such asin handling drill stem and other pipe and rods and in servicing gas,water, and other wells.

By way of premise, oil wells, as is well known, require frequentservicing by way of pulling and detaching from each other the sectionsof well tubing to clear the line for proper operation in drilling.' Welltubing is manufactured in very long lengths and must be pulled from thewell with a direct vertical pull and stacked on end without any greatinclination from the vertical otherwise the tubing is subjected tobending the disadvantages of which will be manifest. Heretofore suclipulling of well tubing has been accomplished by means of rigs of thederrick type erected over the well as occasion required. This'isexpensive, time consuming, and attended with considerable danger tooperators. Furthermore it requires a separate rig for each well.

Having the foregoing in mind, it is the principal object of my inventionto provide a portable rig movable from well to well and equippedespecially for pulling, with a direct vertical pull, long lengths ofwell tubing from the well and stacking the same on end without incliningthem from the vertical to such an extent as to cause them to bend, andwhich, as compared with the derrick equipment, above mentioned, is moreeffi-.

cient; durable and economical in operation.

My invention also comprehends other objects, all of which will becomereadily apparent when the succeeding description is read in conjunctionwith the drawings accompanying and forming part of this specification,it being understood that the invention resides in the features ofconstruction and combination of parts specifically treated in saiddescription, illustrated in the drawings, and defined in the claimsappended hereto.

In said drawings- Figure 1 is a view in side elevation of a rigembodying my improvements,

Figure 2 is a view in rear elevation of the boom and partsv appurtenantthereto,

Figure 3 is a view in transverse section taken on the line 3-3 of Figure2, looking downwardly and drawn to an enlarged scale,

Figure 4 is a fragmentary view in front elevation of the parts shown inFigure 3,

Figure 5 is a detailed fragmentary view in top plan ofmeans for seemingthe finger board to the boom,

Figure 6 is a view in top plan, parts shown in section, of one of thesectionsof the boom,

Figure 7 is a view in vertical'section of parts 5 of two adjoining boomsections, the sections being disassembled,

Figure 8 is a detailed view in vertical section illustrating the meansfor attaching two boom sections together, and

Figure 9 is a fragmentary view in front elevation of the lower end ofthe boom, parts broken away, and parts shown in section.

Referring to the drawings by numerals, in the illustrated embodimentthereof, the rig of my inl5 vention comprises a carriage I mounted inany suitable manner on rails 2 for movement along the same toward andfrom' the well location indicated at 3. The carriage I supports theusual hoisting mechanism designated as a unit by the numeral 4 andincluding the hoisting drum assembly 5.

In front of the carriage I is a gin pole 6 suitably supported in a baseblock I encased by an angle iron shoe 8 resting on the rails 2 forsliding movement along the same with the carriage I. The gin pole 6 maybe of any suitable constructionand has mounted at the upper end thereofthe usual sheave 9. Guy wires I0 suitably attached to the upper end ofthe gin poie 6 and anchored in any suitable manner sustain the gin polein vertical position against forward tilting.

In front of the gin pole 6 is a boom I I supported at its base on therails 2 by means of a block I2, similar to block 1, and a shoe I3,similar to shoe 8, and for rocking movement on said rails. A yoke I4pivotally connected to the blocks '5 and I2 anchors the base of the boomII at a suitable distance from the gin pole 6. Vertical rocking movementof the boom II is im- 40 parted thereto to lift the same into upstandingposition by means of the usual cable represented by dotted lines, at I5,and extending from the drum assembly 5 over the sheave 9 with one end.conlnected to an intermediate part of boom as As shown in Figure 1 theboom is designed to be positioned close to the well 3 and rockedthereover into substantially vertical position, that is to say, into aslightly forwardly inclined position. At its upper end the boom II hassuitably secured thereto to project forwardly therefrom a yoke I'I-serving as 'a mounting for the usual sheave assembly I8 for the usualblock and tackle including the hoisting cable I8 extending from the drumassembly I and the block 28 carried in.

the bight of the cable l8. An idler 2 l. is provided on the upper end ofthe boom II on the rear thereof for guiding the cable l8 at this point.In the described position of the boom II and by virtue of the yoke H thecable l8 and block 28 are suspendedfrom the sheave assembly i8 insubstantially vertical alignment with the well tubing 22 so that byconnecting said block to the said tubing the latter may be pulled fromthe well 3 by a pull directed thereagainst axially thereof. The block 28is connected to the well tubing 22 by means of any suitable clamp orcoupling represented at 23. Forwardly and rearwardly extending guywires, or cables, 24 and 28 secured to the yoke l1, as at 28, andsuitably anchored secure the boom II in the described position.

With specific reference to the boom H, this member is formed of sectionsreinforced at their juncture with each other and further constructed toimpart great strength and rigidity thereto without unduly increasing theweight thereof. Each section 21 comprises four longitudinal tubularmembers 28 connected together by intermediate tubular cross members 29and diagonal tubular struts 38 both welded in position. with theexception of the top section 21 the others are provided at what may betermed upper ends thereof with tubular sockets 3| sleeved and weldedonto the ends of the members 28 and in which the lower ends of the nexthigher section member 28 are telescopically fitted. Extendin between thesockets ll of each section 21 are cross bars 32 similar to bars 29.Corner brackets 33 are welded to the sockets 33 and bars 32 extendingtherefrom. Similar brackets 34 are welded to the lower ends of members28 and the lowermost bars 28 of the next higher section. Bolts 35passing through the brackets 33 and 34 of adjoining sections 21 securethe sections of the boom in assembled relation. The boom II is mountedon the block |2 by means of studs 36 upstanding from said block and overwhich the members 28 of the lowermost section 21 telescope. Turn buckles31 having hooked ends 38 taking in eye bolts 38' in the block i2 andconnected by hooked links 38 to intermediate cross members 29 of thelowermost section 21 anchor the boom H to said block l2.

The described boom II is braced against forward flexing by means of acable strut extending from approximately midway of the upper,

section 21 to points adjacent the lower ends of the lowermost section 21and along the back of said boom. The s'trut has the form of a steelcable 48 looped around a sheave 4| mounted on a cross bar .42 suitablysecured to the back of the upper section 21, the cable ends beingconnected to the members 28 of the lowermost section, one by a turnbuckle 43 and the other by welding as at 44. The side stretches of thecable 48 extend along the back sides of the boom over stanchions 45outstanding at intervals from the boom i1 and preferably welded to themembers 28 thereof, said stanchions slidably supporting the cable 48. Aswill be seen, by taking up on the cable 48 through the medium of theturn buckle 43 the boom may be tensioned uniformly against flexing.

At a suitable point intermediate the ends thereof the boom H hasmounted, on an intermediate section 21 thereof, a finger board 45. Thefinger board 48 comprises a base frame including a front tubular bar 41extending across the front of said section 21 equi-distantly on eachside thereof and a pair of rear horizontal bars 48 inclining from theends of the bar 41 to the rear members 28 of said section. Suitableclamps 48, including bolts 88, secure the front bar 41 to the frontmembers 28 of said section and the ends of the rear bars 48 to the rearmembers 28 of said section. The front bar 41 carries a platform 5|extending forwardly therefrom directly in front of the boom. Triangularside platforms 52 extend between the front bars 41 and rear bars 48 onopposite sides of the boom ii respectively. Racking fingers, or rods, 52extend forwardly from the bar 41 upon opposite sides of the platform ll,the outermost racking fingers being formed heavier than the others. Thefinger board 48 is equipped with a rear railing for grasping by theoperator comprising end posts 84 and top rails 58 extending from theposts to the rear members 28 of said section and to which they aresecured by clamps 58 similar to clamps 48. Diagonal braces 81 extenddownwardly from the ends of the bar 41 to said section to which they aresecured as in the case of the bars 41, 48 and rails 58. As will be seenby means of the described clamps the finger board may be adjusted tovdifferent heights on the boom Referring to the finger board 46 is sodesigned that in the previously described position of the boom thetackle I8, 28 clears the same in pulling the tubing. Thus an operatormay stand on the platform 5| within convenient reach of the upper end ofa tubing section as it is pulled and grasp the same. After the tubingsections are pulled they are disconnected from each other, at the usualrotary table 58 the use of which will be understood, and lifted clear ofsaid table by the described tackle. They are then swung forwardlyslightly and to one side, or the other, while suspended and lowered inupright position onto the ground. Their upper ends are then manipulatedby an operative on the platform 5|, or platforms 52, to incline the sameinto position between selected racking bars 53 and the tackledisconnected therefrom by the operative in a manner which need not beentered into herein.

As will now be seen, the described invention may be more speedily set upfor operation than a stationary derrick and with much less labor and infact will enable an operator to clean out a well that has sanded upbefore a permanent rig could be erected on the ground.

The foregoing will, it is believed, sufilce to impart a clearunderstanding of the construction, use and advantages of my inventionwithout further explanation.

Manifestly the invention, as described, is susceptible of modificationwithout departing from the inventive concept and right is hereinreserved to all such modifications falling within the scope of thesubjoined claims.

What I claim is:

1. In an oil well rig for pulling well tubing, the combination with aportable hoisting mechanism movable toward and from the well, of a useof the invention, the' boom pivotally mounted at one end of saidmechboom, a block and tackle suspended from said 75 yoke for attachmentto the well tubing in substantially vertical alignment therewith andoperative by said mechanism to pull the tubing, and a finger boardvertically adjustable on said boom adjacent the upper end thereof andextending forwardly therefrom between the tackle and boom, the fingerboard including a platform in front of the boom, a pair of platformsupon opposite sides of the boom, respectively, in the rear thereof, andracking rods extending forwardly of the platforms of said pair uponopposite sides of the front platform. I

said mechanism into upstanding position alongside the well to inclineforwardly at a slight angle from the vertical, a block and tackleextending from the upper end of said boom for attachment to the welltubing in substantially vertical alignment therewith and operative bysaid mechanism to pull the tubing, and a finger board verticallyadjustable on said boom adjacent the upper end thereof and extendingforwardly therefrom between the tackle and the boom, the finger boardincluding a platform in front of the boom, a pair of platforms uponopposite sides of the boom, respectively, in the rear thereof, andracking rods extending forwardly of the platforms of said pairs uponopposite sides of the front platform.

LANTRIP M. YORK.

